9113edfff8
This CL also centralizes the instantiation code in GrSurfaceProxy and adds a test. GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4494 Change-Id: I0081d9a216dc0af293179f23bcb88acf6a822324 Reviewed-on: https://skia-review.googlesource.com/4494 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Robert Phillips <robertphillips@google.com>
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrRenderTargetProxy_DEFINED
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#define GrRenderTargetProxy_DEFINED
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#include "GrRenderTarget.h"
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#include "GrSurfaceProxy.h"
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#include "GrTypes.h"
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class GrTextureProvider;
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// This class delays the acquisition of RenderTargets until they are actually
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// required
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// Beware: the uniqueID of the RenderTargetProxy will usually be different than
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// the uniqueID of the RenderTarget it represents!
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class GrRenderTargetProxy : virtual public GrSurfaceProxy {
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public:
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/**
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* The caller gets the creation ref.
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*/
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static sk_sp<GrRenderTargetProxy> Make(const GrCaps&, const GrSurfaceDesc&,
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SkBackingFit, SkBudgeted);
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static sk_sp<GrRenderTargetProxy> Make(sk_sp<GrRenderTarget>);
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GrRenderTargetProxy* asRenderTargetProxy() override { return this; }
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const GrRenderTargetProxy* asRenderTargetProxy() const override { return this; }
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// Actually instantiate the backing rendertarget, if necessary.
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GrRenderTarget* instantiate(GrTextureProvider* texProvider);
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bool isStencilBufferMultisampled() const { return fDesc.fSampleCnt > 0; }
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/**
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* For our purposes, "Mixed Sampled" means the stencil buffer is multisampled but the color
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* buffer is not.
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*/
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bool isMixedSampled() const { return fFlags & GrRenderTarget::Flags::kMixedSampled; }
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/**
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* "Unified Sampled" means the stencil and color buffers are both multisampled.
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*/
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bool isUnifiedMultisampled() const { return fDesc.fSampleCnt > 0 && !this->isMixedSampled(); }
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/**
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* Returns the number of samples/pixel in the stencil buffer (Zero if non-MSAA).
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*/
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int numStencilSamples() const { return fDesc.fSampleCnt; }
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/**
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* Returns the number of samples/pixel in the color buffer (Zero if non-MSAA or mixed sampled).
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*/
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int numColorSamples() const { return this->isMixedSampled() ? 0 : fDesc.fSampleCnt; }
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GrRenderTarget::Flags testingOnly_getFlags() const;
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GrRenderTargetOpList* getLastRenderTargetOpList() {
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return (GrRenderTargetOpList*) this->getLastOpList();
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}
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SkDEBUGCODE(void validate(GrContext*) const;)
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protected:
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// Deferred version
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GrRenderTargetProxy(const GrCaps&, const GrSurfaceDesc&, SkBackingFit, SkBudgeted);
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// Wrapped version
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GrRenderTargetProxy(sk_sp<GrRenderTarget> rt);
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private:
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size_t onGpuMemorySize() const override;
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// For wrapped render targets the actual GrRenderTarget is stored in the GrIORefProxy class.
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// For deferred proxies that pointer is filled in when we need to instantiate the
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// deferred resource.
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// These don't usually get computed until the render target is instantiated, but the render
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// target proxy may need to answer queries about it before then. And since in the deferred case
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// we know the newly created render target will be internal, we are able to precompute what the
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// flags will ultimately end up being. In the wrapped case we just copy the wrapped
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// rendertarget's info here.
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GrRenderTarget::Flags fFlags;
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typedef GrSurfaceProxy INHERITED;
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};
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#endif
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